STAINLESS STEEL TUBING
Table for Determing Theoretical Bursting Pressures
OD, In.
|
B.W.G.
In. |
24
0.022 |
22
0.028 |
20
0.035 |
18
0.049 |
16
0.065 |
14
0.083 |
13
0.095 |
12
0.109 |
11
0.120 |
10
0.134 |
9
0.148 |
8
0.165 |
1/4
|
|
1750
|
2250
|
2800
|
3900
|
5200
|
|
|
|
|
|
|
|
5/16
|
|
1400
|
1800
|
2250
|
3150
|
4150
|
|
|
|
|
|
|
|
3/8
|
|
1200
|
1500
|
1850
|
2600
|
3450
|
|
|
|
|
|
|
|
1/2
|
|
900
|
1100
|
1400
|
1950
|
2600
|
3300
|
3800
|
|
|
|
|
|
5/8
|
|
700
|
900
|
1100
|
1550
|
2100
|
2650
|
3050
|
|
|
|
|
|
3/4
|
|
600
|
750
|
950
|
1300
|
1750
|
2200
|
2550
|
2900
|
|
|
|
|
7/8
|
|
500
|
650
|
800
|
1100
|
1500
|
1900
|
2150
|
2500
|
|
|
|
|
1
|
|
450
|
550
|
700
|
1000
|
1300
|
1650
|
1900
|
2200
|
2400
|
|
|
|
1-1/8
|
|
|
500
|
600
|
850
|
1150
|
1500
|
1700
|
1950
|
2150
|
|
|
|
1-1/4
|
|
|
450
|
550
|
800
|
1050
|
1350
|
1500
|
1750
|
1900
|
2150
|
|
|
1-1/2
|
|
|
350
|
450
|
650
|
850
|
1100
|
1250
|
1450
|
1600
|
1800
|
|
|
1-3/4
|
|
|
300
|
400
|
500
|
750
|
950
|
1100
|
1250
|
1350
|
1550
|
|
|
2
|
|
|
300
|
350
|
500
|
650
|
850
|
950
|
1100
|
1200
|
1350
|
1500
|
|
2-1/4
|
|
|
|
300
|
450
|
600
|
750
|
850
|
950
|
1050
|
1200
|
1300
|
|
2-1/2
|
|
|
|
300
|
400
|
500
|
650
|
750
|
850
|
950
|
1050
|
1200
|
1300
|
2-3/4
|
|
|
|
250
|
350
|
450
|
600
|
700
|
800
|
850
|
1000
|
1100
|
1200
|
3
|
|
|
|
250
|
350
|
450
|
550
|
650
|
750
|
800
|
900
|
1000
|
1100
|
3-1/4
|
|
|
|
|
|
450
|
500
|
600
|
650
|
750
|
800
|
900
|
1000
|
3-1/2
|
|
|
|
|
|
350
|
450
|
550
|
600
|
700
|
750
|
850
|
950
|
3-3/4
|
|
|
|
|
|
350
|
450
|
500
|
600
|
650
|
700
|
800
|
900
|
4
|
|
|
|
|
|
300
|
400
|
500
|
550
|
600
|
650
|
750
|
800
|
4-1/4
|
|
|
|
|
|
300
|
400
|
450
|
500
|
550
|
650
|
700
|
800
|
4-1/2
|
|
|
|
|
|
300
|
350
|
400
|
500
|
550
|
600
|
650
|
750
|
4-3/4
|
|
|
|
|
|
250
|
350
|
400
|
450
|
500
|
550
|
600
|
700
|
5
|
|
|
|
|
|
250
|
350
|
400
|
450
|
500
|
550
|
600
|
650
|
NOTE: Above pressures are calculated to nearest 50 psi. |
Based on Barlow’s formula with a unit fiber stress of 10,000 psi
Example:
For Type 304 Stainless Tubing with an ultimate strength of 85,000 psi.
Multiply figures on table by 8.5.
Based on formula P=2f(t/D)
(tensile)
f – Fiber stress in pounds per square inch
D – Outside diameter in inches
P – Pressure in pounds per square inch
t – Thickness of wall in inches
NOTE: To compute safe working pressures, above burst pressures should be divided by your desired safety factor